Event: Dave Nicholas Summer League

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Opponent Rating Result
Simon Gathern 0 1 - 0
Andrew Gibson 133 1 - 0
Andrew Gibson 133 0 - 1
Simon Gathern 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

267 = (266 + 400 * (3 - 1)) / 4)

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